The War Memoirs of Winston Churchill: Face to Face with Stalin Life Magazine 30 October 1950 at pages 104 and 106:
[about 1am August 18, 1942]
"I thought you would have found it bad," said I [Churchill], "because you were not dealing with a few score thousands of aristocrats or big landowners, but with millions of small men."
"Ten millions," he [Stalin] said, holding up his hands. "It was fearful. Four years it lasted. It was absolutely necessary for Russia, if we were to avoid periodic famines..."...
"What happened to them?" I [Churchill] asked.
he [Stalin] said "...the great bulk were very unpopular and were wiped out by their laborers"
Is there any independent evidence that this conversation is or isn't accurately quoted?
